CN111950223A

CN111950223A - Automobile wire harness modularized circuit splitting method and system

Info

Publication number: CN111950223A
Application number: CN201910403165.6A
Authority: CN
Inventors: 牟重阳; 张俊杰; 王猛; 俞晓; 孙超; 蒲伟; 魏志勇
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-11-17

Abstract

The invention discloses a method and a system for splitting a modular circuit of an automobile wire harness. According to the invention, the automobile wire harness is split in a modularized manner to obtain the basic function modules required by the configuration of all automobile types and the plurality of matching function modules meeting the personalized customization requirements, so that when the automobile is produced according to the customized production mode of a user, only the basic function modules need to be selected and the corresponding matching function modules need to be selected according to the customized requirements, and the configuration of hundreds of millions of parts does not need to be designed, thereby greatly saving manpower and time.

Description

Automobile wire harness modularized circuit splitting method and system

Technical Field

The invention relates to the technical field of automobile circuit design, in particular to an automobile wire harness modularized circuit splitting method and system.

Background

The traditional automobile production mode is as follows: the whole factory develops and manufactures a series of bundled vehicle models, such as luxury version vehicle models, flagship version vehicle models and the like according to market research, and then a user selects a required vehicle model from the bundled and configured vehicle models. At present, for practicing supply-side reform guidelines advocated by the state, the adaptability and flexibility of a supply structure to demand changes are improved, and some vehicle manufacturing enterprises have promoted a user customized production mode. The customized production mode is as follows: the vehicle manufacturer produces vehicle models meeting the customized requirements of users according to the function configuration selected by each user according to the preference of the user in the form of a mobile phone APP and the like.

The large-scale customized production mode brings huge challenges to the traditional automobile production mode, particularly to a whole automobile wire harness of an automobile, because thousands of circuits generate hundreds of millions of parts to be configured and need to be designed under the free customization of users, while the traditional part development mode cannot be realized, and no existing solution can be referred to in the existing automobile industry, so that a large amount of manpower and time are consumed for producing the automobile according to the customized production mode each time.

Disclosure of Invention

In view of the above, the present invention discloses a method and a system for splitting a wiring harness modular circuit, so that when a vehicle is produced according to a customized production mode of a user, only a basic function module needs to be selected and a corresponding matching function module needs to be selected according to customized requirements, and parts configuration in hundreds of millions of parts does not need to be designed, thereby greatly saving labor and time.

A circuit splitting method for modularization of an automobile wire harness comprises the following steps:

drawing an initial circuit diagram of the automobile wire harness;

performing configuration option definition on each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a full-configuration circuit diagram;

and carrying out module splitting on the full-configuration circuit diagram according to circuit function configuration requirements to obtain a basic function module and a plurality of matching function modules, wherein the basic function module comprises standard matching options required to be used by all vehicle types, and each matching function module has unique function configuration.

Optionally, the preset criteria include:

the configuration options of the wiring harness circuit satisfy the conditions: the configuration options of the wiring harness circuit are expressed by configuration feature codes in a preset finished automobile configuration table; when the configuration options of the wiring harness circuit cannot be expressed by the configuration feature codes in the finished automobile configuration table, the wiring harness circuit is expressed in a form of a plurality of configuration feature code combinations; the configuration options of the wiring harness circuit are expressed by using the most direct associated constraint factors; the configuration options of the wiring harness circuit adopt a positive expression form;

the relationship between the harness module and the circuit configuration options is as follows: a harness module comprising one or a combination of circuit configuration options;

the configuration options for the number of speakers category are defined in terms of a superposition mode.

Optionally, when the fully configured circuit diagram includes: when the complex circuit associated with the multiple configurations is configured, the method for carrying out module splitting on the complex circuit associated with the multiple configurations comprises the following steps:

combining all related configuration functions in the multi-configuration related complex circuit together to serve as a matching function module family;

matching various logic combinations in the matching functional module family, and listing all differences of the matched combinations;

and defining each combination obtained by the difference listing as an optional functional module.

Optionally, the method further includes:

and obtaining a wiring harness modularization matrix based on the basic function module and the plurality of matching function modules.

Optionally, the harness modular matrix includes:

the first column is a whole vehicle bill of material system module group code used for representing the attribute characteristics of the parts;

the second column is module group code information transmitted to supply through the order management system;

the third column is the part number information of the wire harness module;

the fourth column is part names used to describe module names;

the fifth column is a module family for representing grouping information of the functional configuration module and the basic module;

the sixth column is attribute description information of the module family;

the seventh column is information directly corresponding to module codes in the circuit schematic diagram and the wiring harness diagram;

the eighth column is key information for defining the association relationship between the module and the configuration options;

the ninth column is the adaptation condition of each module defined in the whole vehicle bill of material system.

An automotive harness modular circuit splitting system comprising:

the drawing unit is used for drawing an initial circuit diagram of the automobile wire harness;

the fully-configured circuit diagram determining unit is used for defining configuration options of each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a fully-configured circuit diagram;

and the module splitting unit is used for carrying out module splitting on the full-configuration circuit diagram according to the circuit function configuration requirements to obtain a basic function module and a plurality of matching function modules, wherein the basic function module comprises standard matching options which are required to be used by all vehicle types, and each matching function module has unique function configuration.

Optionally, the preset criteria include:

Optionally, when the fully configured circuit diagram includes: when the associated complex circuit is configured in multiple ways, the module splitting unit comprises:

the splitting subunit is configured to perform module splitting on the complex circuit associated with multiple configurations, and specifically includes:

Optionally, the method further includes:

and the matrix acquisition unit is used for obtaining the wiring harness modular matrix based on the basic function module and the plurality of matching function modules.

Optionally, the harness modular matrix includes:

the third column is the part number information of the wire harness module;

the fourth column is part names used to describe module names;

the sixth column is attribute description information of the module family;

According to the technical scheme, the invention discloses a method and a system for splitting a modular circuit of an automobile wire harness, which are used for drawing an initial circuit diagram of the automobile wire harness, carrying out configuration option definition on each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a full configuration circuit diagram, and carrying out module splitting on the full configuration circuit diagram according to circuit function configuration requirements to obtain a basic function module and a plurality of optional configuration function modules. According to the invention, the automobile wire harness is split in a modularized manner to obtain the basic function modules required by the configuration of all automobile types and the plurality of matching function modules meeting the personalized customization requirements, so that when the automobile is produced according to the customized production mode of a user, only the basic function modules need to be selected and the corresponding matching function modules need to be selected according to the customized requirements, and the configuration of hundreds of millions of parts does not need to be designed, thereby greatly saving manpower and time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the disclosed drawings without creative efforts.

Fig. 1 is a flow chart of a circuit splitting method for modularization of an automobile wire harness according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of the present invention showing an error in the configuration options of the ceiling wiring harness circuit;

fig. 3 is a schematic view of a loudspeaker mounting principle disclosed in the embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a definition of configuration options for a speaker number category according to an embodiment of the present invention;

FIG. 5 is a block diagram of a complex circuit of a multi-configuration associative circuit according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an automobile wiring harness modular circuit splitting system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The automobile wiring harness modularization process is generally developed according to a traditional assembly mode in the early stage, and in an OTS (Off Tooling Sample car) stage of relatively stable design, modularization circuit splitting definition is carried out on the design of a traditional assembly, so that circuit splitting is the most key and most core link in modularization design.

The modularized circuit splitting process of the automobile wire harness is based on the actual wire harness design state of a locked version, the configuration requirements (which configurations need to be freely combined) of the whole automobile are combined, the specific configuration options (options) of each circuit and the factors such as arrangement difference of arrangement paths are combined, the circuit in a specific basic function module or a specific optional function module is comprehensively considered, the split result of the circuit is a wire harness modularized matrix, and the wire harness modularized matrix is matched with the electrical appliance principle design and the wire harness product drawing, so that the whole set of circuit modularized design result can be obtained.

The most central in the whole splitting process is the circuit splitting module which directly determines the accuracy of the circuit collocation of the automobile wiring harness modularization.

Based on the above, the embodiment of the invention discloses a method and a system for splitting a modular circuit of an automobile wire harness, which draw an initial circuit diagram of the automobile wire harness, define configuration options for each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a full configuration circuit diagram, and split the module of the full configuration circuit diagram according to circuit function configuration requirements to obtain a basic function module and a plurality of optional function modules. According to the invention, the automobile wire harness is split in a modularized manner to obtain the basic function modules required by the configuration of all automobile types and the plurality of matching function modules meeting the personalized customization requirements, so that when the automobile is produced according to the customized production mode of a user, only the basic function modules need to be selected and the corresponding matching function modules need to be selected according to the customized requirements, and the configuration of hundreds of millions of parts does not need to be designed, thereby greatly saving manpower and time.

Referring to fig. 1, an embodiment of the present invention discloses a flow chart of a circuit splitting method for modularization of an automotive wiring harness, and the method includes the steps of:

s101, drawing an initial circuit diagram of the automobile wire harness;

the process of drawing the initial circuit diagram can refer to the existing mature scheme, and is not described herein again.

Step S102, carrying out configuration option definition on each wiring harness circuit in the initial circuit diagram according to a preset standard to obtain a full-configuration circuit diagram;

it should be noted that, the purpose of defining the configuration option for each wire harness circuit in the original circuit diagram is as follows: the modularized splitting of the automobile wire harness is facilitated.

In practical application, in order to determine the functions of each split circuit in each harness module, when configuration option definition is performed on each circuit, the following preset standards are adopted:

the configuration options of the harness circuit (one) satisfy the following A, B, C and D four conditions.

A. The configuration options of the wiring harness circuit are expressed by configuration Feature codes (Feature codes) in a preset finished vehicle configuration table. The configuration options of the wiring harness circuit are expressed by using configuration feature codes to express the functional expression of the configuration options beneficial to curing the wiring harness loop, and the specific reference can be made to table 1.

TABLE 1

Wherein, the configuration feature code is: a 4-digit alpha + numeric mix code such as "B00L", "215D", etc. in table 1.

B. When the configuration options of the wiring harness circuit cannot be expressed by the configuration feature codes in the finished automobile configuration table, the wiring harness circuit is expressed in a form of a combination of a plurality of configuration feature codes.

For example, two design states of BCM2.2 and BCM2.0 exist in BCM of a certain vehicle model, the most direct design constraint condition of BCM2.2 platform is AT or rearview mirror folding (E00P/K20M), i.e. when AT or rearview mirror folding function is configured in design, BCM2.2 must be used due to BCM hardware circuit, and since no option of BCM2.2 exists in the vehicle configuration table (the vehicle configuration table does not show a specific design state), the option of difference circuit between BCM2.2 and BCM2.0 can be expressed by E00P/K20M. It should be noted that, in the case of using the combined configuration feature code, the combined configuration feature code must be the design constraint factor most directly associated with this component or circuit, and cannot be replaced with an equivalent code in the current vehicle configuration table. This is because the vehicle configuration table is very complex and is updated frequently, especially the vehicle configuration table of the commercial vehicle enterprise, so when the relationship between the vehicle configuration table and the equivalent code is changed, the combination constraint is not established, and the problem is not easily perceived by the harness engineer, and the problem is easily left in the final product vehicle.

C. The configuration options for the harness circuitry are expressed using the most directly related constraints.

For example, the configuration options of the ceiling wiring harness circuit on a certain vehicle type express errors, which directly expresses as: the UC (BOM constraint relationship) expression error results in missed development, which is specifically shown in fig. 2.

In the case shown in fig. 2, the configuration options of the PEPS circuit branch because the ceiling harness are not expressed by directly related constraint air conditioning ducts, but are expressed by wrong binding relations using skylights. Therefore, when the binding relationship between the skylight and the air conditioner is changed, the wiring harness circuit is wrong, and the matching cannot be realized. In the wiring harness modularization mode, the configuration options of wiring harness circuits must be expressed by the most direct related constraint factors, otherwise potential functional or assembly problems are inevitably generated while the modularization flexibility is exerted, and the problems cannot be detected.

D. The configuration options of the wiring harness circuit adopt a positive expression form.

In order to avoid understanding errors in the circuit splitting process, avoid logic and understanding errors in the expression process of the relation between the wiring harness module and the configuration options, and avoid judgment errors of design software, the configuration options are not suitable to adopt a 'not' expression form. For example; the configuration code of a certain function is S30P, and in the case of expressing that the function is not carried out, the configuration option cannot adopt the form of 'non-S30P'. The code for "no this configuration" in Family of this configuration in the vehicle configuration table (generally ending with X) may be used, e.g., the code without S30P is S30X, and thus, the configuration option expressing no S30P configuration should be used as "S30X". That is, the configuration options take the form of affirmative expressions.

(II) the relationship between the wiring harness module and the circuit configuration options is as follows: a harness module includes one circuit configuration option or a combination of circuit configuration options.

The most desirable beam pattern is: the circuit configuration options directly serve as the wiring harness modules, but specific configuration options cannot be expressed by customer perception, and the number of split wiring harness modules cannot be too large and too thin, because the split wiring harness modules are too thin, the situation that associated modules are changed in engineering change easily occurs, the management is difficult, and in the process of manufacturing logistics, too many modules which are too finely divided are not expected to be seen in a design and distribution link (for example, a short power supply line in a main wiring harness is defined as an unreasonable module splitting scheme). Therefore, two levels of harness modules and circuit configuration options are set in the circuit configuration. The specific relationship between the two is that the circuit configuration options are more detailed than the harness module, one harness module can be a combination of a plurality of circuit configuration options, and one circuit configuration option is a specific signal definition or function of a circuit, which is not necessarily strongly related to the vehicle configuration. The expression of the wiring harness module needs to be strongly associated with the configuration actually seen by the user, and the wiring harness module can be directly selected and matched by the user or the whole vehicle configuration.

(iii) configuration options for the number of speakers category are defined in terms of a superposition mode.

The configuration options for the number of speakers category have some representativeness, mainly because the number of speakers is directly defined in the configuration options. But is confusing in the definition of the beam circuit. For example, in three configurations of 6 speakers, 8 speakers and 12 speakers, 8 speakers are actually 2 speakers added on the basis of 6 speakers, and 12 speakers are 4 speakers added on the basis of 8 speakers, as shown in the schematic diagram of the speaker installation principle shown in fig. 3.

If the speakers in the schematic diagram shown in fig. 3 define speaker loop options according to the configuration meaning, the loop of 6 speakers also belongs to 8 speakers and 12 speakers, so that when the schematic diagram is represented, several devices and circuits of 6 speakers need to be repeatedly drawn three times, and the option of "6 speakers/8 speakers/12 speakers" also exists on the circuit, thereby resulting in that the options of the picture plane and the loop are very complicated, the information is large, the recognition is not facilitated, and errors are easily caused. Harness modularity generally does not employ a logical combination of multiple configuration options on the loop.

In order to simplify the drawing and the configuration options, the configuration options of the loudspeaker number category are defined according to the superposition mode.

For example, the configuration options of 8 loudspeakers in the wire harness circuit are defined as follows: only two speaker loops that are added on a 6 speaker basis are defined as "8 speakers", and similarly, only 4 speaker loops that are added on an 8 speaker basis are defined as "12 speakers" for 12 speakers. It is to be noted here, however, that it is necessary to ensure that the superimposed "basic configuration options" are shared in physical location and circuit interface, which is merely an increase in number, and in particular, see the schematic diagram for defining the configuration options of the speaker number category shown in fig. 4.

Step S103, module splitting is carried out on the full configuration circuit diagram according to circuit function configuration requirements, and a basic function module and a plurality of matching function modules are obtained.

Specifically, the basic function module means a module that is required to be used for all vehicle types. Theoretically, all the standard options can be put together to serve as a basic function module, namely the basic function module comprises the standard options needed to be used by all vehicle types, and only one module number is arranged in the basic function module.

The code of "10" is defined as "10" in the module family attribute (the "10" represents that all vehicle types of the basic module need to be configured, and the code of "10" is mainly used for carrying out correctness identification and verification on the module in a downstream order and manufacturing system, and the method aims at vehicle types with relatively simplified circuit configuration options.

Therefore, the splitting principle of the basic function module in the application is as follows: some complex incompatible differences such as arrangement differences are embodied in the basic function module, for example, the trunk directions of the wire harnesses caused by a single-double air conditioner on a certain vehicle type are inconsistent, and the trunk directions of the wire harnesses caused by an EPB (electric park brake) and an HPB (Hand park brake) are also inconsistent. Therefore, several factors such as single and double air conditioners, EPB, HPB and the like are all put into the basic function module for matching difference, and different basic function modules such as single air conditioner + EPB, double air conditioners + HPB and the like are formed.

Of course, one of the most basic options in the basic function module is the matching option, and the matching options are generally divided into two types:

the first is a conventional mapping option defined on a schematic diagram, generally denoted by "ALL" in circuit configuration options. This option is said to be the basis in the foundation and must be included in the basic function module, and it is required to include this option in different basic function module codes.

Another option for standard matching is that the configuration is given a function name in the principle design, but the function is defined as standard matching of all vehicle types in the whole vehicle configuration table. Meanwhile, in order to deal with the situation that the configuration is cancelled by reducing the configuration in the subsequent vehicle model development and evolution process, the configuration options of the function names are still adopted in the principle design (because if ALL the configuration options are marked as ALL options, it is difficult to identify which ALL circuits are used for the function when the function is split at the moment). For a certain vehicle model, ABS (Anti-lock braking system) is configured as a full-system standard, EPS (Electric Power Steering system) is also configured as a full-system standard, and configuration options of the two configurations are not represented by ALL but defined by ABS and EPS, respectively, so that the basic function module also needs to add the configuration options to the configuration options of the basic function module.

Therefore, the splitting strategy of the basic function module comprises: the basic function module is defined as standard configuration options (including "ALL" configuration option circuit, and circuit for standard configuration options, such as ABS global standard, ABS related configuration option circuit is also defined in the basic function module), and also the complex logic relationship configuration option circuit which is not compatible with each other and is difficult to express directly for configuration code is also defined in the basic function module.

The splitting of the matching function module with a single configuration function is simpler than that of the basic function module, whether the configuration option associated with the current wiring harness circuit is associated with other matching function modules or not is mainly considered in principle design, and the wiring harness circuit which is not associated with the configuration or the function of other matching function modules can be used as one matching function module, namely, each matching function module has unique function configuration.

It should be noted that, if there is a difference in the installation and arrangement direction in the current wiring harness circuit, the current wiring harness circuit needs to be split into a plurality of matching functional modules according to the arrangement difference. For example, if there is no arrangement difference, the circuit of one cigarette lighter is defined as only a cigarette lighter module, but if there is an arrangement difference, such as two paths in the arrangement direction, one cigarette lighter module needs to be defined for each path.

The invention provides a differential superposition type modular splitting definition method aiming at a complex circuit with complex multi-configuration incidence relation.

For the complicated circuit with complex multi-configuration association, the following is introduced in detail:

the modularized splitting logic of the complex circuit associated with multi-configuration is very important, and the situations that the module is matched with multiple loops or few loops and the like can occur when the splitting logic is incorrect, and finally the obtained module is abnormal in function.

Since modular splitting involves more abstract logical operations, the following detailed explanation of the modular splitting logic is provided with specific examples.

The circuit shown in fig. 5, which represents the most complex circuit associated with multiple configurations, uses a heuristic method to compare the actual results of the traditional harness assembly mode and the different modular splitting logic methods to confirm the correct splitting logic.

A) Firstly, in the conventional harness assembly design mode, in the design environment of fig. 5, the harness assembly and the loop configuration options correspond to each other by using a logical relationship, and or on the circuit needs to consider a logical combination, for example, table 2 lists options selected by different configuration assemblies and actually represented circuits respectively, and table 2 is as follows:

TABLE 2

Under the traditional harness assembly mode, the assemblies such as PN1, PN2, PN3 and the like are independent and complete harness assemblies and do not need to be spliced, so circuit options can be expressed by adopting logical operations (such as A & B, A & C and A/B/C), the expression is simplified, and the assemblies can accurately correspond to the harness assemblies. The traditional harness assembly model is also a design expression form of a profile which is fully verified by each OEM and various design software.

B) If the module is also expressed in the modularized mode by using the above configuration options with logical relationships, the results shown in table 3 are obtained, where table 3 is as follows:

TABLE 3

Since the A, B and C functions are grouped into 3 module families, and A, B and C are in a mutual match relationship, the results shown in Table 4 are generated, and Table 4 is as follows:

TABLE 4

As can be seen from table 4, in addition to the harness assembly with only a single function of A, B and C, as long as multiple functions exist in A, B and C, the loop No. 4 is redundant because the logical representation of loop No. 4 "or" is distributed among multiple modules that are added once combined. Obviously, this distribution cannot be used in modular mode.

C) If the simple stacking mode of configuration options is simply adopted in the modularized mode, the simple stacking means that no judgment logic is needed, and the options existing on all the circuits are directly in one-to-one correspondence as simple texts, taking the circuit in fig. 5 as an example, the conventional splitting is as in table 5, and table 5 is as follows:

TABLE 5

In this case, the actual harness assembly is shown in table 6, where table 6 is as follows:

TABLE 6

In summary, in the splitting and matching case, the circuit No. 4 originally expressed by "or" and the circuit No. 3 and 5 originally expressed by "and" have redundancy, and obviously, the module allocation definition manner is not preferable.

E) Based on the above discussion, the modular mode is most different from the conventional mode in that: the modules need to be matched, logic operation expression on the circuit can ensure correct logic in a single module, but redundant circuits of OR operation and circuit loss of AND operation can occur after a plurality of modules are spliced. Therefore, the configuration options of the circuit in the modularized mode cannot adopt logic expressions, and the configuration options with the logic relations originally are treated as a brand-new simple text configuration option.

In addition, as to how to define the module assembly when the module is split and collocated, according to the above analysis for specific cases, if two configuration functions are correlated "or" and ", if the two configuration functions are defined as two different module assemblies, redundancy or loss occurs on the correlated circuit, so it is true that:

the first step is as follows: in the complex circuit associated with multiple configurations, all associated configuration functions are combined together to be used as a module family of the matching function;

the second step is that: and matching various logic combinations in the matching functional module family, and listing all differences of the matched combinations (such as combinations of A only, B only, A + B, B + C and the like).

The third step: and defining an optional functional module by each combination obtained by the difference listing.

Also for the above circuit, the results obtained using this approach are shown in table 7, table 7 below:

TABLE 7

Therefore, the method for uploading and splitting does not have the surplus or shortage of circuits, so that logic errors can be thoroughly avoided, and certainly, the parts of A, B and C also need to be seen in arrangement and combination to a certain extent, namely, the parts are in a small local traditional assembly form. More module numbers are generated if there are too many associated circuit options. Therefore, in the early stage circuit design process, the islanding of each configuration function needs to be maintained as much as possible, so as to avoid the local occurrence of such a small assembly in the modular mode, and to simplify the configuration collocation difficulty and the constraint code writing difficulty in the BOM as much as possible. Because the splitting logic is differentiated according to the configuration options and then classified and superposed according to the differentiation result, the visual modular splitting definition method named as a differential superposition mode is provided.

In summary, the invention discloses a circuit splitting method for modularization of an automobile wire harness, which comprises the steps of drawing an initial circuit diagram of the automobile wire harness, defining configuration options for each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a full configuration circuit diagram, and splitting modules of the full configuration circuit diagram according to circuit function configuration requirements to obtain a basic function module and a plurality of matching function modules. According to the invention, the automobile wire harness is split in a modularized manner to obtain the basic function modules required by the configuration of all automobile types and the plurality of matching function modules meeting the personalized customization requirements, so that when the automobile is produced according to the customized production mode of a user, only the basic function modules need to be selected and the corresponding matching function modules need to be selected according to the customized requirements, and the configuration of hundreds of millions of parts does not need to be designed, thereby greatly saving manpower and time.

To further optimize the above embodiment, after obtaining a basic function module and a plurality of optional function modules in step S103, the method may further include the steps of:

Specifically, in the present application, the circuit splitting result is defined by formatting, and therefore, the definition of the obtained harness modularization matrix is shown in table 8, where table 8 is as follows:

TABLE 8

The matrix shown in table 8 is divided into nine columns, and for the contents represented by each column, the following description is made:

the first column "GBOM module group code" is a part attribute feature developed specifically for wiring harness modularity in GBOM (Global bill of materials inventory system). The primary purpose of this feature is to distinguish whether the parts in the GBOM belong to modular parts. And if the module group codes are the same, the module group codes represent the same wiring harness assembly. In short, the parts with the module group code attribute are the parts in the modular mode, and if the module group codes are the same, the parts are the assembly wiring harnesses to be assembled. Specifically to the wiring harness, the module group code is equivalent to the Family concept of a conventional wiring harness assembly, such as "instrument wiring harness," "door wiring harness," "body wiring harness," and the like.

The second column, "KSKBTO Release Module group code" (KSK is an abbreviation of Kunden-Spezifscher Kabel, Germany, meaning customer-customized wiring harness, BTO is an abbreviation of Build to order, meaning customer order-based manufacturing management System), is a remarks information column. The meaning of the method is module group code information transmitted to a BTO software end of a supplier through an order management system, and the only difference from the module group code is as follows: the order management system automatically appends item code information, such as SV91-RF, before sending the order.

The third column "module part number", this column is the part number information of the specific harness module, in the GBOM system, the module part number is identical to the conventional general part number numbering rule, therefore if it is to identify whether a harness is a modular harness, it must rely on the attribute of "GBOM module group code" in the first column to identify.

The fourth column "part name" is consistent with the conventional part name in GBOM, and has no difference, and the main purpose is to describe the module name, so that people can quickly and simply identify the function and action of the module. The wire harness part names in GBOM are now basically also traditional, defined as only a few large series of parts. Such as a body harness, a meter harness, etc. If the attribute of the module name needs to be added, a new name can be applied to the ES. Modular part naming conventions are intended to allow one to understand the functional configuration of the module by name, such as "skylight module" in the table, etc.

The fifth column "Family" should be called "module Family" strictly. The method mainly represents the grouping information of the function configuration module and the basic module. Such as "basic module", "PEPS (Passive Entry Passive Start) module", etc. Here, the module family is subdivided into different module part numbers according to actual needs to distinguish states.

The sixth column "Family property", which is property description information for the module Family. The attribute number of the module Family is not defined by a unified standard at present, but the classification of the module Family is generally divided into; "all configuration", "one-out-of-multiple configuration", and "optional configuration". Module Family property definition: all configurations are "10", and the one-out-of-multiple configuration is "5", and the optional configuration is "1". The difference between them is; the complete configuration means that all vehicle types of the module must be matched. The one-out-of-many configuration means that all models in the Family of modules must be selected to be one. The optional configuration indicates that the module in this Family of modules may or may not be selected.

The seventh column, "Module Code", is information directly corresponding to the Module Code in the schematic circuit diagram and the wiring harness diagram. Because the part number of the CVTC is long and is not convenient to display on each specific circuit on the drawing, the module code is adopted to be embodied on the circuit and each wire harness component.

The eighth column "Option Expression" is the key information defining the association relationship between the module and the configuration Option. In order to express no logic error, the expression of the relation of ' and ' superposition ' is ensured as much as possible. For example PEPS & NSRF (note: here not represented by a specific code in the configuration table by definition for ease of general understanding) represents the circuit where this module code is equal to the PEPS option plus the circuit for NSRF. If it is really impossible to avoid the combination option defining circuit, it can be indicated by brackets instead.

The ninth column, "UC", is a list of information that is not incongruous with respect to the wiring harness drawings and the design itself, and is mainly the adaptation conditions defined for each module in the GBOM system. The conventional integrated harness UC is relatively complex, and is relatively simple because the configuration associated with each module is reduced after modularization.

Corresponding to the embodiment of the method, the invention also discloses a modular circuit splitting system of the automobile wire harness.

Referring to fig. 6, a schematic structural diagram of an automotive harness modular circuit splitting system according to an embodiment of the present invention is disclosed, and the system includes:

the drawing unit 201 is used for drawing an initial circuit diagram of the automobile wire harness;

a fully-configured circuit diagram determining unit 202, configured to define configuration options for each wire harness circuit in the initial circuit diagram according to a preset standard, so as to obtain a fully-configured circuit diagram;

The module splitting unit 203 is configured to split the module of the full-configuration circuit diagram according to the circuit function configuration requirement, so as to obtain a basic function module and a plurality of matching function modules, where the basic function module includes standard matching options that need to be used by all vehicle types, and each matching function module has a unique function configuration.

When the fully configured circuit diagram comprises: when the associated complex circuit is configured in multiple ways, the module splitting unit 203 includes:

In summary, the invention discloses a modular circuit splitting system for an automobile wire harness, which is used for drawing an initial circuit diagram of the automobile wire harness, performing configuration option definition on each wire harness circuit in the initial circuit diagram according to a preset standard to obtain a full configuration circuit diagram, and performing module splitting on the full configuration circuit diagram according to circuit function configuration requirements to obtain a basic function module and a plurality of matching function modules. According to the invention, the automobile wire harness is split in a modularized manner to obtain the basic function modules required by the configuration of all automobile types and the plurality of matching function modules meeting the personalized customization requirements, so that when the automobile is produced according to the customized production mode of a user, only the basic function modules need to be selected and the corresponding matching function modules need to be selected according to the customized requirements, and the configuration of hundreds of millions of parts does not need to be designed, thereby greatly saving manpower and time.

To further optimize the above embodiment, the circuit splitting system may further include:

Wherein the beam modular matrix comprises:

the third column is the part number information of the wire harness module;

the fourth column is part names used to describe module names;

the sixth column is attribute description information of the module family;

It should be noted that, in the system embodiment, please refer to the corresponding portion of the method embodiment for the specific working principle of each component, which is not described herein again.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit splitting method for modularization of an automobile wire harness is characterized by comprising the following steps:

drawing an initial circuit diagram of the automobile wire harness;

2. The circuit splitting method according to claim 1, wherein the preset criteria include:

3. The circuit splitting method according to claim 1, wherein when the fully configured circuit diagram comprises: when the complex circuit associated with the multiple configurations is configured, the method for carrying out module splitting on the complex circuit associated with the multiple configurations comprises the following steps:

4. The circuit splitting method according to claim 1, further comprising:

5. The circuit splitting method according to claim 4, wherein the harness modular matrix comprises:

the third column is the part number information of the wire harness module;

the fourth column is part names used to describe module names;

the sixth column is attribute description information of the module family;

6. An automotive harness modular circuit splitting system, comprising:

7. The circuit splitting system according to claim 6, wherein the preset criteria comprise:

8. The circuit splitting system according to claim 6, wherein when the fully configured circuit diagram comprises: when the associated complex circuit is configured in multiple ways, the module splitting unit comprises:

9. The circuit splitting system of claim 6, further comprising:

10. The circuit splitting system of claim 9, wherein the harness modular matrix comprises:

the third column is the part number information of the wire harness module;

the fourth column is part names used to describe module names;

the sixth column is attribute description information of the module family;